Which is the correct sequence of steps necessary to complete the following reaction?
A) I then II then III
B) II then I then III
C) II then IV
D) III then I
E) I then IV then II then III

Question

Which is the correct sequence of steps necessary to complete the following reaction? 
A) I then II then III 
B) II then I then III 
C) II then IV 
D) III then I 
E) I then IV then II then III

Quizplus · Accepted Answer

First, we need to perform the Friedel-Crafts acylation reaction to attach the acyl group to the benzene ring. This involves step II, which generates the electrophile (the acylium ion), and then step I, which involves the attack of the benzene ring on the electrophile. 
Once the acyl group is attached, we need to reduce it to an alkyl group, which is done in step III using lithium aluminum hydride. 
Step IV is not necessary for the completion of the reaction, as it just involves work-up and purification.

Which Is the Correct Sequence of Steps Necessary to Complete